The engine is nearing completion! This week I take apart the clutch to inspect the discs for wear. A special socket is required to remove the nut that holds the clutch pack in place but I didn’t have one. No problem. I got creative with a 4 1/2″ grinder and a 7/8″ socket and made my own special tool! It worked great as you’ll see in the video.
Keep on hackin…
The starter on an engine is a DC motor that rotates the crankshaft of the engine to get it started. Once the engine is started, the starter must have some sort of mechanism that uncouples it from the engine or else it would spin too fast and be destroyed. Automotive starters have a built in mechanism called a bendix drive that engages and disengages the drive gear with the engine’s flywheel. Starters on motorcycles utilize a one way clutch known as a Sprag Clutch. It will allow torque in one direction only and slip in the other direction.
The alternator is a device that produces an AC electrical current when rotated. The center portion known as the rotor is an electromagnet. It rotates within an outer winding of metal and wire called a stator. Each component functions as an electromagnet with multiple north and south poles. When in rotation, these opposite poles pass by each other and produce and electrical current in their windings via magnetic induction. The AC current output then passes through a bridge rectifier which converts it into a DC current that can charge a battery.
In this week’s video I’ll take a look inside both of these components, test them, and then install them in the engine.
Keep on hackin…
The oil metering jets that I left out in part 16 arrived and I installed them this week along with the camshaft assembly. Of course I had to time the camshaft and adjust the valves which is all covered in this video.
Keep on hackin…
The oil pump is at the heart of every engine. In this installment I’ll cover inspecting and rebuilding the oil pump for the CB750 engine.
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That crazy shifter mechanism is together! Over 20 parts make up this assembly and if you haven’t taken it apart yourself it can be a real challenge to figure out. After some research on the interwebs and finding a few videos on YouTube I managed to put all the pieces together in the right order.
I have found the OEM parts breakdown drawings to be of help with things like this. Most of the online parts suppliers use these drawings to help you identify parts when ordering. Here’s an example showing the “gearshift stopper” assembly.
Here’s a picture of the completed assembly on the engine.
I usually print these out along with the parts description pages to help me determine bolt and screw lengths as well.
In this week’s video you can follow along step by step and see just how this whole thing goes together.
Keep on hackin…
